Mop

Abstract

The utility model relates to the technical field of cleaning tools, and discloses a mop which comprises a mop head and a mop rod, the mop rod at least comprises a first rod body and a second rod body, the first end of the first rod body and the second end of the second rod body are matched in an inserted mode and fixed through an expansion sleeve, and the outer diameter of the first end of the first rod body is smaller than the inner diameter of the second end of the second rod body; the expansion sleeve comprises an expansion sleeve main body defined by at least two sub-expansion blocks and elastic connecting parts connected between the adjacent sub-expansion blocks, and when the expansion sleeve extends into the hollow area of the second end of the second rod body, the sub-expansion blocks are extruded to enable the elastic connecting parts to store energy; the elastic connecting part always applies an outward expansion acting force to the sub-expansion block in an energy storage state, so that the sub-expansion block is tightly propped against the inner wall of the second end of the second rod body, and the friction force between the expansion sleeve and the second rod body is increased, so that the expansion sleeve can be tightly matched between the first rod body and the second rod body in an expansion manner; and the connection stability and reliability of the first rod body and the second rod body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning tools, in particular to a mop. Background Art

[0002] In the existing cleaning tools, such as mops, brooms, windshield wipers, etc., in order to facilitate the user's gripping operation, a relatively long cleaning rod is provided, which makes the cleaning tool occupy a large space during transportation, increasing the transportation and packaging costs. Therefore, in order to facilitate transportation and save the packaging volume, those skilled in the art usually set the cleaning rod as a multi-segment rod body with detachable connection, and disassemble the rod body during packaging and transportation.

[0003] Some related technologies adopt an expansion sleeve to connect two adjacent rod bodies to improve the disassembly and assembly efficiency. Specifically, an inner rod and an outer rod with mutual insertion and matching are adopted. An expansion sleeve is sleeved on the inner rod. When the outer rod is connected to the inner rod, the inner side of the expansion sleeve contacts the inner rod, and the outer side contacts the outer rod. During the installation process, the expansion sleeve rotates with the outer rod. During the tightening process of the outer rod and the inner rod, the expansion sleeve expands towards both the inside and the outside. Due to possible errors in the processing of the outer rod, in the initial state, the expansion sleeve does not contact the outer rod or the friction force is insufficient, resulting in the abnormal installation between the outer rod and the inner rod. Summary of the Utility Model

[0004] In view of this, the utility model provides a mop to solve the problem that in the way of connecting two rod bodies by using an expansion sleeve in the existing technology, due to processing errors of the outer rod, the expansion sleeve does not contact the outer rod or the friction force is insufficient, resulting in the abnormal installation between the outer rod and the inner rod.

[0005] The utility model provides a mop, comprising:

[0006] A mop head;

[0007] A mop rod, at least including a first rod body and a second rod body, the first end of the first rod body is inserted and matched with the second end of the second rod body and fixed by an expansion sleeve, and the outer diameter of the first end of the first rod body is smaller than the inner diameter of the second end of the second rod body;

[0008] The expansion sleeve includes at least an expansion sleeve body formed by enclosing two or more sub-expansion blocks, and an elastic connection part connected between adjacent sub-expansion blocks. When the expansion sleeve extends into the hollow area of the second end of the second rod body, the sub-expansion blocks are squeezed so that the elastic connection part stores energy, and the elastic connection part always applies an outward expansion force to the sub-expansion blocks in the energy storage state, making the sub-expansion blocks closely abut against the inner wall of the second end of the second rod body.

[0009] Beneficial effects: The expansion sleeve is designed with an expansion sleeve body formed by enclosing two split expansion blocks and elastic connection parts connected between adjacent said split expansion blocks. This can increase the elastic deformation of the split expansion blocks, making the opening angle between the two split expansion blocks larger in the initial state. During assembly, first, the expansion sleeve is sleeved on the first end of the first rod body, and then the second end of the second rod body is sleeved on the expansion sleeve and the second rod body is screwed. During the tightening process of the first rod body and the second rod body, the split expansion blocks are squeezed, causing the elastic connection parts to store energy. The elastic connection parts always exert an outward expansion force on the split expansion blocks in the energy storage state, so that the split expansion blocks are in close contact with the inner wall of the second end of the second rod body, increasing the friction between the expansion sleeve and the outer rod. Thus, the expansion sleeve can be tightly expanded and fitted between the first rod body and the second rod body, improving the stability and reliability of the connection between the first rod body and the second rod body, and effectively solving the problem in the prior art that in the method of using an expansion sleeve to connect two rod bodies, there are machining errors in the outer rod, resulting in non-contact or insufficient friction between the expansion sleeve and the outer rod, so that the outer rod and the inner rod cannot be normally installed.

[0010] In an alternative embodiment, the elastic connection part is an arc structure, and the arc-shaped elastic connection part protrudes towards the center direction of the expansion sleeve;

[0011] Alternatively, the elastic connection part is a bent structure.

[0012] Beneficial effects: Through the design of using an arc structure or a bent structure for the elastic connection part, it is easier to deform and store energy. And when the elastic connection part is an arc structure, the arc-shaped elastic connection part protrudes towards the center direction of the expansion sleeve, so that the two split expansion blocks connected to it have a tendency to expand towards both sides, ensuring that the split expansion blocks can maintain a close-fitting state with the inner wall of the second rod body.

[0013] In an alternative embodiment, the thickness of the elastic connection part is less than the thickness of the split expansion block.

[0014] Beneficial effects: By adopting the design that the thickness of the elastic connection part is less than the thickness of the split expansion block, the elastic connection part is more easily squeezed and deformed to store energy.

[0015] In an alternative embodiment, the number of the split expansion blocks is two, and one side of the two split expansion blocks is connected by the elastic connection part, and the other side has a set gap.

[0016] Beneficial effects: One side of the two sub-expansion blocks is connected by the elastic connecting part, and a gap is formed on the other side to form a notch. As the first rod body and the second rod body are assembled, the opening angle of the expansion sleeve body becomes larger and larger. By adopting the design of connecting one side and having a notch on the other side for the two sub-expansion blocks, it is more convenient for the two sub-expansion blocks to expand outwards to be tightened and fixed in the second rod body.

[0017] In an alternative embodiment, the central angle corresponding to the sub-expansion block is 180°;

[0018] Set the distance between the two sides of the two sub-expansion blocks where the elastic connecting part is provided as D1, and the distance between the other two sides as D2, where D2 > D1.

[0019] Beneficial effects: One side of the two sub-expansion blocks is connected by an inwardly protruding elastic connecting part, making D2 > D1, so as to effectively ensure that the two sub-expansion blocks have a tendency to expand outwards in the natural state without being stressed, and further can expand the inner diameter size range of the adapted second rod body, improving the fault tolerance rate for the second rod body.

[0020] In an alternative embodiment, an internal thread is provided on the inner circumference of the expansion sleeve body, and an external thread is provided on the outer surface of the first end of the first rod body, and the internal thread is in mating connection with the external thread.

[0021] Beneficial effects: The expansion sleeve body and the first rod body are connected by a threaded connection method, and the connection is more reliable and stable, and is not easy to fall off.

[0022] In an alternative embodiment, a plurality of anti-slip protrusions are provided on the outer wall of the expansion sleeve body.

[0023] Beneficial effects: By providing the anti-slip protrusions on the outer wall of the expansion sleeve body, the friction between it and the second rod body can be increased.

[0024] In an alternative embodiment, the anti-slip protrusions are arranged circumferentially around the expansion sleeve body, and a plurality of the anti-slip protrusions are arranged at intervals along the axial direction of the expansion sleeve body.

[0025] Beneficial effects: The anti-slip protrusions are arranged circumferentially around the expansion sleeve body, so that the expansion sleeve and the second rod body can form a uniform and stable fit in the entire circumference, and by arranging a plurality of anti-slip protrusions at intervals along the axial direction of the expansion sleeve body, the friction between the expansion sleeve and the second rod body can be further increased.

[0026] In an alternative embodiment, along the circumferential direction of the expansion sleeve body, the wall thickness of the sub-expansion block is different.

[0027] Beneficial effects: By providing an arcuate elastic connecting portion, the two sub-expansion blocks tend to expand outwards, thereby increasing the error range of the inner diameter of the second rod body, improving the error tolerance of the fit between the expansion sleeve and the second rod body. Moreover, through the design of different wall thicknesses for the sub-expansion blocks, the acceptable error range of the inner diameter of the second rod body can be further expanded relative to the position of the minimum wall thickness. Also, due to the different wall thicknesses of the sub-expansion blocks, the sub-expansion blocks do not fully and tightly fit with the inner wall of the second rod body, and the contact area between the sub-expansion blocks and the inner wall of the second rod body is small while the friction force is large, which can improve the tightening effect.

[0028] In an alternative embodiment, the thickness of the two end portions of the arcuate sub-expansion block is less than the thickness of the middle portion. Description of the Drawings

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 It is a schematic structural view of the mop in the embodiment of the present invention;

[0031] Figure 2 It is an enlarged cross-sectional view of the connection between the first rod body and the second rod body of the mop in the embodiment of the present invention;

[0032] Figure 3 It is a schematic structural view of the expansion sleeve from the first perspective in the embodiment of the present invention;

[0033] Figure 4 It is a schematic structural view of the expansion sleeve from the second perspective in the embodiment of the present invention;

[0034] Figure 5 It is a schematic structural view of the expansion sleeve from the third perspective in the embodiment of the present invention;

[0035] Figure 6 It is a top view of the expansion sleeve in the embodiment of the present invention.

[0036] Description of the Reference Numerals:

[0037] 10, mop head;

[0038] 20, mop rod;

[0039] 21, first rod body; 211, rod main body; 212, first cylindrical section; 2121, second limiting boss; 213, second cylindrical section; 2131, first limiting boss;

[0040] 22. Second rod body

[0041] 23. Expansion sleeve; 231. Expansion sleeve main body; 2311. Sub-expansion block; 2312. Anti-slip protrusion; 2313. Reinforcing rib; 232. Elastic connection part Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model

[0043] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance

[0044] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations

[0045] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other

[0046] The following combines Figures 1 to 6 , to describe the embodiments of the present utility model

[0047] According to an embodiment of the present utility model, the present utility model provides a mop, which includes a mop head 10 and a mop rod 20. The mop rod 20 at least includes a first rod body 21 and a second rod body 22. The first end of the first rod body 21 is inserted and matched with the second end of the second rod body 22 and fixed by an expansion sleeve 23. The outer diameter of the first end of the first rod body 21 is smaller than the inner diameter of the second end of the second rod body 22. The expansion sleeve 23 includes an expansion sleeve main body 231 formed by enclosing at least two sub-expansion blocks 2311, and an elastic connection part 232 connected between adjacent sub-expansion blocks 2311. When the expansion sleeve 23 extends into the hollow area of the second end of the second rod body 22, the sub-expansion blocks 2311 are squeezed so that the elastic connection part 232 stores energy. The elastic connection part 232 always exerts an outward expansion force on the sub-expansion blocks 2311 in the energy storage state, so that the sub-expansion blocks 2311 are in close contact with the inner wall of the second end of the second rod body 22.

[0048] In the above embodiment, the expansion sleeve 23 is designed with an expansion sleeve main body 231 formed by enclosing two sub-expansion blocks 2311 and an elastic connection part 232 connected between adjacent sub-expansion blocks 2311, which can increase the elastic variable of the sub-expansion blocks 2311, so that the opening angle between the two sub-expansion blocks 2311 is larger in the initial state. During assembly, first, the expansion sleeve 23 is sleeved on the first end of the first rod body 21, then the second end of the second rod body 22 is sleeved on the expansion sleeve 23, and the second rod body 22 is screwed. During the tightening process of the first rod body 21 and the second rod body 22, the sub-expansion blocks 2311 are squeezed so that the elastic connection part 232 stores energy. The elastic connection part 232 always exerts an outward expansion force on the sub-expansion blocks 2311 in the energy storage state, so that the sub-expansion blocks 2311 are in close contact with the inner wall of the second end of the second rod body 22, increasing the friction between the expansion sleeve 23 and the inner wall of the second rod body 22, so that the expansion sleeve 23 can be tightly expanded and fitted between the first rod body 21 and the second rod body 22, improving the stability and reliability of the connection between the first rod body 21 and the second rod body 22, and effectively solving the problem in the prior art that in the method of using the expansion sleeve 23 to connect two rod bodies, there are processing errors in the outer rod, resulting in non-contact or insufficient friction between the expansion sleeve 23 and the outer rod, so that the outer rod and the inner rod cannot be normally installed.

[0049] Specifically, in this embodiment, both the first rod body 21 and the second rod body 22 are hollow tubular structures. The outer diameter of the first end of the first rod body 21 is smaller than the inner diameter of the second end of the second rod body 22, so that the first end of the first rod body 21 can be inserted into the second rod body 22. Herein, the first rod body 21 can also be called the inner rod, and the second rod body 22 can also be called the outer rod. An external thread is provided on the outer periphery of the first end of the first rod body 21, and an internal thread is provided on the inner periphery of the expansion sleeve main body 231. The expansion sleeve main body 231 is threadedly sleeved on the first rod body 21, which improves the stability of the cooperation between the expansion sleeve 23 and the first rod body 21 and reduces the risk of the expansion sleeve 23 falling off.

[0050] Preferably, the first end of the first rod body 21 is configured as a conical cylinder, and a conical channel is correspondingly provided on the inner periphery of the expansion sleeve 23. The design of the conical cylinder-shaped first rod body 21 can play a role in guiding and positioning, and improve the assembly efficiency of the first rod body 21 and the expansion sleeve 23.

[0051] Specifically, in combination with Figure 1 、 Figure 2 and Figure 4 and Figure 5 As shown, the first rod body 21 includes a rod main body 211 and a first cylindrical section 212 provided at the first end of the rod main body 211. The first cylindrical section 212 is conical cylinder-shaped, and the outer diameter of the first cylindrical section 212 gradually decreases from the rod main body 211 in the direction away from the rod main body 211. An external thread is provided on the outer periphery of the first cylindrical section 212. The first rod body 21 further includes a second cylindrical section 213 connected to the end of the first cylindrical section 212. A cylindrical channel is correspondingly provided on the inner periphery of the expansion sleeve 23 for the second cylindrical section 213. A circular first limiting boss 2131 is provided on the outer periphery of the end of the second cylindrical section 213 away from the first cylindrical section 212. By providing the first limiting boss 2131, the phenomenon that the expansion sleeve 23 is squeezed by the second rod body 22 and falls off from the first rod body 21 during the assembly of the first rod body 21 and the second rod body 22 can be effectively prevented.

[0052] Preferably, a second limiting boss 2121 is further provided at the end of the first cylindrical section 212 away from the second cylindrical section 213. The second limiting boss 2121 is used to limit the extreme displacement of the expansion sleeve 23 in the direction of the rod main body 211, and prevent the expansion sleeve 23 from rotating excessively on the first rod body 21 driven by the second rod body 22, which affects the assembly effect of the first rod body 21 and the second rod body 22.

[0053] Preferably, the expansion sleeve body 231 is respectively provided with a connecting section and a guiding section corresponding to the first cylinder section 212 and the second cylinder section 213. The conical channel is provided in the connecting section, and internal threads are provided on the inner circumference of the conical channel. The cylindrical channel is provided in the guiding section, and the outer peripheral wall of the guiding section is conical. The outer diameter of the guiding section gradually decreases from the connecting section in the direction away from the connecting section. Such a design can play a role in guiding and positioning, and facilitate the cooperation between the expansion sleeve 23 and the second rod body 22.

[0054] In some embodiments, in combination with Figure 3 and Figure 6 as shown, the elastic connecting portion 232 is an arc structure, and the arc-shaped elastic connecting portion 232 protrudes towards the center direction of the expansion sleeve 23; alternatively, the elastic connecting portion 232 is a bent structure.

[0055] In the above embodiments, by adopting the design of the elastic connecting portion 232 with an arc structure or a bent structure, it is easier to deform and store energy. And when the elastic connecting portion 232 adopts an arc structure, the arc-shaped elastic connecting portion 232 protrudes towards the center direction of the expansion sleeve 23, so that the two sub-expansion blocks 2311 connected thereto have a tendency to expand towards both sides, ensuring that the sub-expansion blocks 2311 and the inner wall of the second rod body 22 can maintain a tightly fitting state.

[0056] Preferably, in this embodiment, the elastic connecting portion 232 is an arc-shaped connecting rib, and the length of the arc-shaped connecting rib is the same as the axial length of the expansion sleeve body 231. The two sides of the arc-shaped connecting rib are connected between two adjacent sub-expansion blocks 2311.

[0057] More preferably, the elastic connecting portion 232 and the sub-expansion block 2311 are integrally injection-molded.

[0058] In some embodiments, the thickness of the elastic connecting portion 232 is less than the thickness of the sub-expansion block 2311.

[0059] In the above embodiments, by adopting the design that the thickness of the elastic connecting portion 232 is less than the thickness of the sub-expansion block 2311, the elastic connecting portion 232 is more likely to be deformed by extrusion to store energy.

[0060] In some embodiments, the number of the sub-expansion blocks 2311 is two, and one side of the two sub-expansion blocks 2311 is connected by the elastic connecting portion 232, and the other side has a set gap.

[0061] In the above embodiments, one side of the two sub-expansion blocks 2311 is connected by the elastic connection part 232, and a gap is formed on the other side to form a notch. Since the channel in the expansion sleeve body 231 is conical, and the second rod body 22 is assembled along the direction from the small-diameter end to the large-diameter end of the expansion sleeve body 231, therefore, with the assembly of the first rod body 21 and the second rod body 22, the opening angle of the expansion sleeve body 231 will become larger and larger. By adopting the design of connecting one side and having a notch on the other side for the two sub-expansion blocks 2311, it is more convenient for the two sub-expansion blocks 2311 to expand outwards to be tightened and fixed in the second rod body 22.

[0062] In some embodiments, the central angle corresponding to the sub-expansion block 2311 is 180°; it is set that the distance between the two sides of the two sub-expansion blocks 2311 where the elastic connection part 232 is provided is D1, and the distance between the other two sides is D2, wherein D2 > D1.

[0063] In the above embodiments, one side of the two sub-expansion blocks 2311 is connected by an elastic connection part 232 that protrudes inwards, so that the distance D1 between the two sides of the two sub-expansion blocks 2311 where the elastic connection part 232 is provided is smaller than the distance D2 between the other two sides, thereby effectively ensuring that the two sub-expansion blocks 2311 have a tendency to expand outwards in the natural state without being stressed, and further expanding the inner diameter size range of the adaptable second rod body 22 and improving the tolerance rate for the second rod body.

[0064] In some embodiments, internal threads are provided on the inner circumference of the expansion sleeve body 231, and external threads are provided on the outer surface of the first end of the first rod body 21, and the internal threads are in mating connection with the external threads.

[0065] In the above embodiments, the expansion sleeve body 231 and the first rod body 21 are connected by means of screw connection, and the connection is more reliable and stable and not easy to fall off.

[0066] In some embodiments, as Figures 3 to 5 shown, a plurality of anti-slip protrusions 2312 are provided on the outer wall of the expansion sleeve body 231.

[0067] In the above embodiments, by providing the anti-slip protrusions 2312 on the outer wall of the expansion sleeve body 231, the friction force between it and the second rod body 22 can be increased.

[0068] In some embodiments, the anti-slip protrusions 2312 are arranged circumferentially around the expansion sleeve body 231, and a plurality of the anti-slip protrusions 2312 are arranged at axial intervals on the expansion sleeve body 231.

[0069] In the above embodiments, the anti-slip protrusions 2312 are circumferentially arranged around the expansion sleeve body 231, so that the expansion sleeve 23 and the second rod body 22 can form a uniform and stable fit in the entire circumference. Moreover, by providing a plurality of anti-slip protrusions 2312 axially spaced on the expansion sleeve body 231, the friction between the expansion sleeve 23 and the second rod body 22 can be further increased.

[0070] Specifically, the anti-slip protrusions 2312 are anti-slip bosses provided on the outer periphery of the expansion sleeve body 231, and a plurality of anti-slip bosses are axially spaced along the expansion sleeve body 231. Of course, in other alternative embodiments, the anti-slip protrusions 2312 can also adopt structural forms such as a plurality of convex points, convex edges, and anti-slip patterns.

[0071] In some embodiments, as Figure 5 shown, reinforcing ribs 2313 are provided on the outer wall of the expansion sleeve body 231, and the reinforcing ribs 2313 are connected between a plurality of anti-slip protrusions 2312. By providing the reinforcing ribs 2313, it can effectively prevent the anti-slip protrusions 2312 from being easily deformed by soft collapse, and thus fail to achieve a good effect of increasing the friction force.

[0072] Preferably, the reinforcing ribs 2313 extend along the axial direction of the expansion sleeve body 231, and there are a plurality of reinforcing ribs 2313, and the plurality of reinforcing ribs 2313 are circumferentially spaced along the expansion sleeve body 231.

[0073] In some embodiments, along the circumferential direction of the expansion sleeve body 231, the wall thickness of the sub-expansion blocks 2311 is different.

[0074] In the above embodiments, by providing the arc-shaped elastic connection portion 232, the two sub-expansion blocks 2311 have a tendency to expand outwards, so that the error range of the inner diameter of the second rod body 22 can be increased, and the error tolerance of the fit between the expansion sleeve 23 and the second rod body 22 can be improved. Moreover, by adopting the design of different wall thicknesses for the sub-expansion blocks 2311, the error range of the acceptable outer rod inner diameter can be further expanded relative to the position of the minimum wall thickness. And because the wall thicknesses of the sub-expansion blocks 2311 are different, the sub-expansion blocks 2311 are not all in close contact with the inner wall of the second rod body 22, and the contact area between the sub-expansion blocks 2311 and the inner wall of the second rod body 22 is small, and the friction force is large, which can improve the tightening effect.

[0075] In some more specific embodiments, the thicknesses of the two end portions of the arc-shaped sub-expansion block 2311 are smaller than the thickness of the middle portion.

[0076] The expansion sleeve 23 provided in this embodiment includes an expansion sleeve main body 231 and an elastic connection part 232. The expansion sleeve main body 231 is composed of two sub-expansion blocks 2311. The two sub-expansion blocks 2311 are connected by an arc-shaped elastic connection part 232, which can increase the elastic variable of the sub-expansion blocks 2311, that is, make the opening angle between the two sub-expansion blocks 2311 larger in the initial state, and have a tendency to open to both sides. Internal threads are provided inside the two sub-expansion blocks 2311, and the internal threads are in fit connection with the external threads provided on the first rod body 21. Anti-slip stripes are provided on the outer sides of the two sub-expansion blocks 2311 along the circumferential direction to increase the friction between the expansion sleeve 23 and the second rod body 22. And the thicknesses of both ends of the two sub-expansion blocks 2311 are smaller than the thickness in the middle of the sub-expansion blocks 2311, which can improve the error tolerance rate of the cooperation between the expansion sleeve 23 and the second rod body 22.

[0077] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the protection scope of the embodiments of this application.

Claims

1. A mop, characterized in that: Comprising: A mop head (10); A mop rod (20), which at least includes a first rod body (21) and a second rod body (22). The first end of the first rod body (21) is inserted and cooperated with the second end of the second rod body (22) and fixed by an expansion sleeve (23). The outer diameter of the first end of the first rod body (21) is smaller than the inner diameter of the second end of the second rod body (22); The expansion sleeve (23) includes an expansion sleeve main body (231) formed by enclosing at least two split expansion blocks (2311), and an elastic connection part (232) connected between adjacent split expansion blocks (2311). When the expansion sleeve (23) extends into the hollow area of the second end of the second rod body (22), the split expansion blocks (2311) are squeezed so that the elastic connection part (232) stores energy. The elastic connection part (232) always exerts an outward expansion force on the split expansion blocks (2311) in the energy storage state, so that the split expansion blocks (2311) are in close contact with the inner wall of the second end of the second rod body (22).

2. The mop according to claim 1, characterized in that, The elastic connection part (232) is an arc structure, and the arc-shaped elastic connection part (232) protrudes towards the center direction of the expansion sleeve (23); Alternatively, the elastic connection part (232) is a bending structure.

3. The mop according to claim 1, wherein The thickness of the elastic connection part (232) is smaller than the thickness of the split expansion blocks (2311).

4. The mop according to any one of claims 1 to 3, characterized in that, The number of the split expansion blocks (2311) is two, and one side of the two split expansion blocks (2311) is connected by the elastic connection part (232), and the other side has a set gap.

5. The mop according to claim 4, characterized in that: The central angle corresponding to the split expansion blocks (2311) is 180°; It is set that the distance between one side of the two split expansion blocks (2311) where the elastic connection part (232) is provided is D1, and the distance between the other side is D2, wherein D2 > D1.

6. The mop according to any one of claims 1 to 3 and 5, characterized in that, Internal threads are provided on the inner circumference of the expansion sleeve main body (231), and external threads are provided on the outer surface of the first end of the first rod body (21). The internal threads are in threaded connection with the external threads.

7. The mop according to any one of claims 1 to 3 and 5, characterized in that, A plurality of anti-slip protrusions (2312) are provided on the outer wall of the expansion sleeve main body (231).

8. The mop according to claim 7, wherein, The anti-slip protrusions (2312) are arranged circumferentially around the expansion sleeve main body (231), and a plurality of the anti-slip protrusions (2312) are arranged at axial intervals of the expansion sleeve main body (231).

9. The mop according to any one of claims 1 to 3, 5, and 8, characterized in that, Along the circumferential direction of the expansion sleeve main body (231), the wall thickness of the split expansion blocks (2311) is different.

10. The mop according to claim 9, characterized in that, The split expansion blocks (2311) are arc-shaped, and the thicknesses of the two end parts of the arc-shaped split expansion blocks (2311) are smaller than the thickness of the middle part.

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